Warning, this verb may not exist. Conjugation is given as example.
Indicative
Present
I enthusiasm you enthusiasm he enthusiasms we enthusiasm you enthusiasm they enthusiasm
Present continuous
I am enthusiasming you are enthusiasming he is enthusiasming we are enthusiasming you are enthusiasming they are enthusiasming
Preterite
I enthusiasmed you enthusiasmed he enthusiasmed we enthusiasmed you enthusiasmed they enthusiasmed
Preterite continuous
I was enthusiasming you were enthusiasming he was enthusiasming we were enthusiasming you were enthusiasming they were enthusiasming
Present perfect
I have enthusiasmed you have enthusiasmed he has enthusiasmed we have enthusiasmed you have enthusiasmed they have enthusiasmed
Present perfect continuous
I have been enthusiasming you have been enthusiasming he has been enthusiasming we have been enthusiasming you have been enthusiasming they have been enthusiasming
Pluperfect
I had enthusiasmed you had enthusiasmed he had enthusiasmed we had enthusiasmed you had enthusiasmed they had enthusiasmed
Pluperfect continuous
I had been enthusiasming you had been enthusiasming he had been enthusiasming we had been enthusiasming you had been enthusiasming they had been enthusiasming
Future
I will enthusiasm you will enthusiasm he will enthusiasm we will enthusiasm you will enthusiasm they will enthusiasm
Future continuous
I will be enthusiasming you will be enthusiasming he will be enthusiasming we will be enthusiasming you will be enthusiasming they will be enthusiasming
Future perfect
I will have enthusiasmed you will have enthusiasmed he will have enthusiasmed we will have enthusiasmed you will have enthusiasmed they will have enthusiasmed
Future perfect continuous
I will have been enthusiasming you will have been enthusiasming he will have been enthusiasming we will have been enthusiasming you will have been enthusiasming they will have been enthusiasming
Conditional
Present
I would enthusiasm you would enthusiasm he would enthusiasm we would enthusiasm you would enthusiasm they would enthusiasm
Present continuous
I would be enthusiasming you would be enthusiasming he would be enthusiasming we would be enthusiasming you would be enthusiasming they would be enthusiasming
Past
I would have enthusiasmed you would have enthusiasmed he would have enthusiasmed we would have enthusiasmed you would have enthusiasmed they would have enthusiasmed
Past continuous
I would have been enthusiasming you would have been enthusiasming he would have been enthusiasming we would have been enthusiasming you would have been enthusiasming they would have been enthusiasming